keep sensitivity at 1
accel at 0.025
sens cap 0
offset 0
power 2
set both post scales to 0.8182 for 0.018 m_yaw/pitch

If you use this accel driver in Quake Live, then you'll want to set your m_yaw/pitch in Quake Live to 0.022 again. Use the driver to change your m_yaw/pitch instead. There is a calculator on the website.